在构架中，远程文件服务器，是为了解耦编译软件包和salt之间的部署关联。sgfs是一个简易的文件上传下载开源服务器，连nginx都节省了。但其原生的功能在上传的同时，增加了更改文件名，防止命令冲突，增加日期目录这些功能，用于bifangback是不合适的。所以改造一下，把功能收缩。

项目地址：
https://github.com/LinkinStars/sgfs

一，部署

官网有两进制下载，不提。
使用startup.sh脚本即可启动。

二，上传

1,不指定子目录,file是相对绝对目录均可

curl -F "file=@ppp.sql" -F "token=654321" http://1.2.3.4:9001/upload-file
返回值

{"code":1,"message":"Save file success.","data":"//2021-01-08/20210108100512_3019917070.sql"}

2,指定子目录

curl -F "file=@/docker/p.sql" -F "token=654321" -F "uploadSubPath=/5/3/" http://1.2.3.4:9001/upload-file

三，访问

http://1.2.3.4:9002

# /

*   [2021-01-08](http://1.2.3.4:9002/2021-01-08), dir, last modified 2021-01-08 02:05:12 +0000 UTC
*   [555](http://1.2.3.49002/555), dir, last modified 2021-01-08 02:02:58 +0000 UTC
*   [ab](http://1.2.3.4:9002/ab), dir, last modified 2021-01-08 02:02:23 +0000 UTC
*   [abc](http://1.2.3.4:9002/abc), dir, last modified 2021-01-08 01:07:33 +0000 UTC
*   [pic](http://1.2.3.4:9002/pic), dir, last modified 2021-01-08 01:06:58 +0000 UTC

四，修改源代码

只修改项目目录下service/upload.go文件，已有注释

package service

import (
    "path"
    "strings"

    "github.com/LinkinStars/golang-util/gu"
    "github.com/valyala/fasthttp"
    "go.uber.org/zap"

    "github.com/LinkinStars/sgfs/config"
    "github.com/LinkinStars/sgfs/util/date_util"
)

func UploadFileHandler(ctx *fasthttp.RequestCtx) {
    // Get the file from the form
    header, err := ctx.FormFile("file")
    if err != nil {
        SendResponse(ctx, -1, "No file was found.", nil)
        return
    }

    // Check File Size
    if header.Size > int64(config.GlobalConfig.MaxUploadSize) {
        SendResponse(ctx, -1, "File size exceeds limit.", nil)
        return
    }

    // authentication
    token := string(ctx.FormValue("token"))
    if strings.Compare(token, config.GlobalConfig.OperationToken) != 0 {
        SendResponse(ctx, -1, "Token error.", nil)
        return
    }

    // Check upload File Path
    uploadSubPath := string(ctx.FormValue("uploadSubPath"))
    // 注释掉， 之前加了日期目录
    // visitPath := "/" + uploadSubPath + "/" + date_util.GetCurTimeFormat(date_util.YYYYMMDD)
    visitPath := "/" + uploadSubPath
    dirPath := config.GlobalConfig.UploadPath + visitPath
    if err := gu.CreateDirIfNotExist(dirPath); err != nil {
        zap.S().Error(err)
        SendResponse(ctx, -1, "Failed to create folder.", nil)
        return
    }
    // 注释掉，不要取什么后缀，直接取文件名
    // suffix := path.Ext(header.Filename)
    // filename := createFileName(suffix)
    filename := header.Filename

    fileAllPath := dirPath + "/" + filename

    /*
        注释掉，有同名，就报错
        // Guarantee that the filename does not duplicate
        for {
            if !gu.CheckPathIfNotExist(fileAllPath) {
                break
            }
            filename = createFileName(suffix)
            fileAllPath = dirPath + "/" + filename
        }
    */

    // Save file
    if err := fasthttp.SaveMultipartFile(header, fileAllPath); err != nil {
        zap.S().Error(err)
        SendResponse(ctx, -1, "Save file fail.", err.Error())
    }

    SendResponse(ctx, 1, "Save file success.", visitPath+"/"+filename)
    return
}

/*
注释掉，不需要重命名文件
func createFileName(suffix string) string {
    // Date and Time + _ + Random Number + File Suffix
    return date_util.GetCurTimeFormat(date_util.YYYYMMddHHmmss) + "_" + gu.GenerateRandomNumber(10) + suffix
}
*/